The ARA Thunersee is a municipal wastewater treatment plant and treats the wastewater of 38 municipalities in the region of Thun. Residents and industry currently result in a load of approx. 150,000 population equivalents. The sewage treatment plant went into operation in 1972 and has been continuously expanded since then. It impresses with its high cleaning performance, low costs and above-average energy values.

ARA Thunersee is one of the most modern wastewater treatment plants in Switzerland. The existing measuring points in the sewer network (whose maintenance is not one of ARA’s tasks) no longer met the requirements of innovative operation and were replaced. In order to be able to distribute the operating costs among the municipalities, the data of the more than 40 newly installed measuring points of the sewer network, which record the respective dry weather quantity, should be transmitted wirelessly and thus enable remote access as well as their ongoing evaluation.